A292074-OEIS公司

A292074型作为一个简单的表

n个	a（n）
1	1
2	4
三	48
4	240
5	1000
6	3300
7	9114
8	21952
9	47520
10	94500
11	175450
12	307824
13	515112
14	828100
15	1286250
16	1939200
17	2848384
18	4088772
19	5750730
20	7942000
21	10789800
22	14443044
23	19074682
24	24884160
25	32100000
26	40982500
27	51826554
28	64964592
29	80769640
30	99658500
31	122095050

[1,4,48,240,1000,3300,9114,21952,47520,94500,175450,307824,515112,828100,1286250,1939200,2848384,4088772,5750730,7942000,10789800,14443044,19074682,24884160,32100000,40982500,51826554,64964592,80769640,99658500,122095050]